Add workflow

.github/workflows/algorithms.yml

@@ -0,0 +1,26 @@
+name: Build algorithms
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  algorithms:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          gradle-version: "8.11.1"
+
+      - name: Build algorithms
+        run: gradle build